Lubricating-packing.



A. CARR. LUBRIG'ATING PACKING. APPLICATION FILED MAR. 11, 1908.

M. L. STEWART & P

Patented June 8, 1909.

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MARTIN L, STEWART AND FRANK A. CARE, OF EL PASO, TEXAS.

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Specification of Letters Patent.

Patented June 8, 1909.

Application filed March 11, 1908. Serial No; sauces.

T 0 all whom it may concern:

Be it known that we, MARTIN L. STEWART and Fears A. CARR, citizens of the United States, residing at El Paso, in the county of El Paso and State of Texas, have invented a new and. useful Lubricating-Packing, of which-the following is a specification;

The primary object of the present invention is to produce by a novel and simple method, an effective packing that will withstand, high pressure and constant service, and will constitute an. excellent lubricant for the rod or other packing device that moves through or past it, I

In the drawings, Figure 1 is a plan View of a packing ring constructed in accordance with the present invention. Fig. 2 is a cross sectional view therethrough.

in carrying out the invention, We take seventy-six parts of lead, fifteen parts oi tin and four parts of antimony; These are separately melted, and while molten, are thoroughly mixed together. The composition is then moldedinto bars or bricks about three-fourths of an inch by six inches, by

twelve inches in size, and after the same faces and not with crystalline facets.

have hardened, they are rasped or otherwise reduced to granular form. The granular composition is thereupon mixed with substantially five parts of graphite, and the mixture designated in the drawings by the reference numeral 3, is placed. in a tubular casing 4 of porous or open mesh fabric, formed in any suitable manner." The article thus produced, is then placed in a good grade of cylinder oil, and allowed to remain therein for from twenty-four hours to thirty-' six hours, whereupon it is ready to be placed in use.

It will be noted that in the above description the composition is described as being reduced to granular form by rasping. Rasping with a file or otherwise granulating the composition by means of a cutting tool turns out the granular particles with cut The particles, therefor-aunt being crystalline in structure, will not out the bearing to which the lubricant is applied, while the cut faces will readily become covered or engaged with the particles of graphite, which would not be the case were the'particles of a crystalline character.

It will be observed that we mix the gra hite with the particles of composition a or the latter have entirely cooled and donot mix the graphite with any molten material. This is of importance inasmuch as the lubrieating properties of graphite are much deteriorated by hi h temperature, audit is extremely diiticu t to mix; graphite. with molten material so as to get a uniform mixture.

Experience-has demonstrated that a packq ing so constructed will resist hi h temperature and high pressure, and wi not wear put or become inactive for a comparatively on pac ring herein described has been in continuous use on the high pressure rod of an air compressor for over three months, and notwithstanding that the machine has been run on an axerage of eighteen hours or day udder a pressure of 150 pounds of 'steam, t e packing shows no material signs of ear, and the rod that passes through it is in excellent condition. As against this, h retofore it has been necessary to pack the same rodon an average of from two to four weeks. Moreover the method of producing lie packing is exceedingly simple, requiring uh expensive machinery or skilled labor,

while the materials employed, are cheap.'

period of time. For example, the

When inclosed in the porous envelop or cas-.

ing, the packing can be bent or shaped to fit the rod and box which it is desired to frictionless.

pack. It provides a packing which is practically Having thus fully described our in ention', what weclaim as new, and desire to secure by Letters Patent, is.:-

1. As an article or manufacture, a pack ing comprising a porous casing and a lubricant located in the casing-and consisting of granular particles of a composition of lead, tin and antimony, said articles having c'ut faces, graphite intimate y mixed with said granular particles, and lubricating oil saturating the casing and the mixture of said composition and gra hite.

2. As an article 0' manufacture, apacking comprising a flexible porous casin that can be hent'about a packing rod, and a lubricant loca ted in the casin and comprising subst antially 5 artsof graphite intimately mixed with granu ated particles of a composition consisting of substantially 7 6 parts of lead, fifteen parts of tin and 4 parts of antimony, and lubricating oil saturating the casing the mixture of said granulated composition and graphite, 3. The method of producing a lubricating and granulating the same when hardened,

packing which consists in thoroughly mixing to ether while in a molten state, lead, tin an antimony, casting the composition mixing graphite with the particles of composition after-said granulation, placing the same in a porous casing and soaking the whole after being incased in lubricating oil.

4. The method of producing lubricating packing Which-consists in thoroughly mixing together while in a molten state, lead, tin and antimony, casting the composition and granulating the same when hardened by a cutting tool whereby the granular particles are given out faces, mixing graphite with the particlw of composition after said granulation, placing the same in a porous casing and soaking the whole after being incuscd in lubricating oil.

5. The method, of producing lubricating 1 packing which consists in thoroughly mix ing together while in a molten state, substantially 76 parts of lead, 15 parts of tin and 4 parts of antimony, casting the composition and g'ranulating the same when it has hardened, intermixing with the particles of,

composition after said granulation, substantially 5 parts of graphite, placing the mixture in a tubular casing of porous fabric, and soaking the completed article in lubricating oil.

In testimony, that we claim the foregoing as our own, we have hereto afiixed our signatures in the presence of two witnesses,

MARTIN L. STEWART. FRANK A. CARR.

-Witnesses: v

NEWEL F. Owns, EDWIN A. MOIN'IYRE. 

